Four versions available: 12 volt: 5 and 10 amp ratings 24 volt: 5 and 10 amp ratings Type of charging: series pwm, state of charge(soc) self-consumption: 6ma maximum 4 stages bulk, pwm, boost and float dimension: 140x90.5mm Electronic protections: short circuit and over current terminals: for wire sizes to 2.5mm2 -solar and load weight: 250g Reverse polarity-solar, load & battery temperature: -35 to +55 Reverse current at night humidity: 100% non-condensing High voltage-load enclosure: ip22 Lightning-solar, load, battery case: abs Tropicalization: circuit board-conformal coated compliance: ce world bank Terminals-corrosion protected Led indications: green charging Green-yellow-red battery levels Red low voltage warning and disconnect Green-yellow-red battery levels All 3 leds blink-to show mistakes 50pcs/carton